José M. Chávez-Garcia, Firat Solgun, et al.
Physical Review Applied
The ability to perform fast, high-fidelity readout of quantum bits (qubits) is essential to the goal of building a quantum computer. However, coupling a fast measurement channel to a superconducting qubit typically also speeds up its relaxation via spontaneous emission. Here, we use impedance engineering to design a filter by which photons may easily leave the resonator at the cavity frequency but not at the qubit frequency. We implement this broadband filter in both an on-chip and off-chip configuration.
José M. Chávez-Garcia, Firat Solgun, et al.
Physical Review Applied
M. Mergenthaler, C. Müller, et al.
npj Quantum Information
John P. T. Stenger, Gilad Ben-Shach, et al.
PRResearch
Jared B. Hertzberg, Antonio D. Córcoles, et al.
DRC 2016